deprecate plugins/max_unrecognized_commands in favor of limit (#2402)
deprecate plugins/max_unrecognized_commands in favor of limit (#2402)

* deprecate plugins/max_unrecognized_commands in favor of limit
- fixes haraka/haraka-plugin-limit#16

msimerson/Haraka,msimerson/Haraka,haraka/Haraka,haraka/Haraka,smfreegard/Haraka,haraka/Haraka,msimerson/Haraka,msimerson/Haraka,smfreegard/Haraka,smfreegard/Haraka,haraka/Haraka,smfreegard/Haraka